I've got some responses from different people which allow me to say 
Auto Clean feature on STK L700 doesn't work with NetBackup 3.2
with SSO. 
According to Veritas Tech Support:

> The robot has to be smart enough to not load a real tape into a drive that
> already has a cleaning tape, if it is going to support this option.
> NetBackup only makes requests of the robot, the robot has to keep track of
> what it's doing... but, you already know this.

Does anyone know how Tape Alert feature works on STK L700 libraries?
Does it work or not?

Another question:
Cleaning on time basis is not recomended for multihosted tape drives.
is it becouse of inability of NetBackup to count of time usage on 
different systems?


Thanks again for everyone who responded for me. 
Andrew

On Tue, Nov 28, 2000 at 08:55:44AM -0600, Andrey Shinkarev wrote:

> We are using Auto Clean Feature in our STK L700 with DLT7000 tape drives. 
> It works fine but sometimes we are getting tape drives downed for 
> the following reason
> 
> Nov 19 17:02:28 uback-ap9-1 tldcd[16650]: TLD(6) key = 0x5, asc = 0x3a, ascq 
> = 0
> x0, MEDIUM NOT PRESENT
> Nov 19 17:02:28 uback-ap9-1 tldcd[16650]: TLD(6) Move_medium error: CHECK 
> CONDIT
> ION
> Nov 19 17:02:28 uback-ap9-1 tldcd[16650]: TLD(6) could not move barcoded tape 
> CL
> N499   from drive 6 to outport
> Nov 19 17:02:28 uback-ap9-1 tldd[17882]: TLD(6) drive 6 (device 5) is being 
> DOWN
> ED, status: Robotic dismount failure
> Nov 19 17:02:28 uback-ap9-1 tldd[17882]: Check integrity of the drive, drive 
> pat
> h, and media
>  
> We are running 3.2 with the patch 443.  
> 
> If anyone had this problem before?
> 
> 
> The problem is NetBackup doesn't know about the cleaing tape and has 0 
> cleaning interval for the tape drive. If I try to clean the tape drive 
> I am getting "No cleaning tape defined in the device's robot"
> And the cleaning tape itself doesn't  exist in NetBackup database.
> I couldn't find any cleaning request in log files, for an old libraries 
> without the Auto Clean feature I saw them a lot. 
> We have 3 libraries and having the problem on all of them. 
> Fast Load feature doesn't solve the problem. We have had it 
> enabled and disabled but still had this problem.
> 
> The Auto Clean Feature works but it looks like NetBackup and 
> the library fight for the tape drive and NetBackup doens't win. 
> I think the cleaning operation should be blocked and NetBackup 
> must wait until it's done. 
> 
> 
> Thanks,
> -- 
> ----
> Andrew Shinkarev
> Network Systems Specialist
> Abbott Laboratories
> (847) 9387559
> shinkara AT pprd.abbott DOT com
> _______________________________________________
> Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu

-- 
----
Andrew Shinkarev
Network Systems Specialist
Abbott Laboratories
(847) 9387559
shinkara AT pprd.abbott DOT com